Drawer-guide.



W. O. GOTTWALS.

DRAWER GUIDE.

APPLlcATloN man nEc.4.1s11.

1,159,490. Patented Nov. 9, 1915.

- 947 m Allume] COLUMNA PLANOGRAPH co.. WASHINIJTON, n. c

w. o. GOTTWALS.

DRAWER GUIDE.

APPLICATION FILED DEC. 4. i911.

1,1 59,490. Patented Nov. 9, 1915.

2 SHEETS-SHEET 2.

9.5mm... m

] vi -f N 1: #w Q FSJ i@ k ma@ M i l 47 f M Allorney arranged 'for WILLIAM O. GOTTWALS, 0F ITASHINGTON,'DISTRICT 0F COLUMBIA.

DRAWER-GUIDE.

risa-ase.

To all whom t may concern.'

Be it known that I, WILLIAM- O. GOTT- wALs, a citizen of the United States, residing at l/Vashington, in the District of Columbia, have invented certain new and useful Improvements in Drawer-Guides, of which the following is a specification.

The invention relates to that class of drawer guides commonly known as sideA extension slides, and has for its objects to insure the easy running ofthe drawer in pulling and pushing it out and in, at the same time attaining simplicity and economy in construction. y

In order to make the invention more clearly understood I have shown in the ac companying drawings means for carrying it into practical effect, without limiting my improvements, in their useful applications, to the particular Constructions which, for the purpose of illustration, I have delineated.

In the said drawings Figure 1 is a vertical longitudinal section of a vertical filing rawer comprising a drawer guide embodying the invention, on line I-I, Fig. 2. Fig. 2 is a vertical cross-section of the same, to which are added the follower and its rod, on line II-II of Fig. 1. Fig. 3 isa horizontal section of the same on line III'MIII of Fig. 1, or' Fig. 2, the drawer being omitted. Fig. 4: is a sectional view on the same plane as Fig. 2, but on a larger scale, showing a portion of the slide and its supporting roller. Fig. 5 is aside view of the parts shown in Fig. 4. Fig. 6 is a detailed cross-section showing the connection be'- tween the slide and the fcasing. Fig. 7 is a side vieja7 partly in section of the front end of the slide, a portion of the drawer and the devices by which the drawer is support-V ed on the slide. Fig. 8 is a transversesection of the same, on line -m, Fig. 7. Fig.

9 is a detailed cross-section of portions of the slide and drawer, showing a modifica-` tion, on line gy-g/, Fig. 10. Fig. 10 is a side view of the same partly in section.

Referring to the drawings, 1 is a case,

frame or support in which the drawer 2 is s lidable, the latter beingmounted upon-'an extension slide 3 mounted in the case. The invention is illustrated in what is known as a' vertical file, for which it is well adapted,

, and the follower 4f 'and its supporting rod 5` holding files and documents Application led December 4, 1911.

Patented Nov. 9, 1215. serial No. ceases.

upright in the drawer 2 are shown in Fig. 2; but these parts are omitted in the other figlires in order that the elements more particularly pertaining to the invention may be more clearly seen.

6 is a shelf of skeleton form lixed in the case, which latter may entirely inclose the drawer excepting at the front or may be of skeleton form, both constructions being of a known character. On this shelf is mounted theslide 3, which consists of vertical side pieces 7 at the sides of the drawer, a vertical crossconnecting back piece 8 and a front cross piece 9 (preferably of metal) which unites the front ends of the sides 7. On the underside of the median portion of the slide (that is to say about half fray between the front and rear ends of the same) are attached metal runners 10 having depending flanges 11, which runners bear on the ends of a transverseroller 12, the flanges 11 entering4v grooves 13`near the ends of the roller to hold it from endwise movement. Otherwise the roller is loose and serves as a running support for the slide 3, the forward and backward movement of the slide being twice the-length of the bodily movement of the roller. The backwardmovement of the slide is arrested by any suitable stop, such as a block 14 secured onthe rear end of the shelf 6, and it is stopped in its forward move ment at the proper point by the engagement of the roller 12 between depending transverse ilangesl on the rear ends of the runners 10 andsuitable fixtures on the front end of the shelf 6. At one side of the slide such `a fixture is supplied by an angle iron 16 which is screwed to the shelf, extends up along the face of one of the sides 7 and has Va flange 17 which enters a groove 18 in such side. At the other side of the shelf there is `flxeda pin or screw 19 which limits the advance of the roller at that side. When `the slide is arrested, therefore, the flanges 15 are m contact with the rear of the roller and the front side of the latter is in'contact with the angle iron 16 and pin19. This engagement of the roller between the two sets of stops re-alines it if it should not be exactly transverse to the slide and keeps it running properly between the shelf and slide. The rearward movement of the roller maybelimited by stops 3l on the shelf 6. The flange 17 and groove 1S-hold the slide down in'proper position and prevent its loo front end being lifted when the drawer is removed. The Vengagement of the cross piece 9 with the angle iron 16 serves as a stop to the rearward movement of the slide, if they are properly related, and the block 14 may be dispensed with. The back end of the slide 3 is prevented from tilting upward, when the slide is extended by a rail 20 fixed to the inner side of the case, beneath which engages the back piece 8 of the slide.

On each side piece 7 ofthe slide, at its front end, is fixed a cage 21 having a base plate 22 and inwardly inclined side flanges 23, between which latter runs a ball 24. The ball cannot escape through the space between the fianges 23 but projects slightly above them. The base plate is a'liix'ed by screws having projecting heads 25 which limit the run of the ball in either direction. On the balls 24 rest the flanges 26 of metal plates 27 attached to each side of the drawer, and on these last mentioned devices the drawer may run forward after the slide is arrested. This last portion of the travel of the drawer is in 4length twice the bodily movement of the balls 24, and the `latter support the drawer from a point in advance of the median line of the drawer to a point in rear of such median line, thus approximately balancing the drawer on the slide. The flanges 26 require to be only as long as the distance between said points. By this balanced arrangement a single ball in each cage gives a perfectly free and easy movement to the drawer. The drawer is or may be stopped in its rearward movement by a stop on the case or by the back piece 8 of the slide. The forward movement of the drawer on the slide is arrested by a stop 28 on the drawer engaging a shoulder 29 on the slide. The stop 28 also engages beneath the rail 2O to prevent the rear end of the drawer from tilting upward.

1f the drawer should be pulled out leaving the slide in place within the case the rolling supportv of the drawer and slide combined would be the roller 12, and the parts would obviously be out of balance and the subseuent drawing out of the slide would be difficult. It is therefore provided that the slide shall accompany the drawer in the first half of the outward movement of the latter so that the slide and drawer combined shall be properly balanced on the roller 12. To this end effect a temporary connection between the drawer and slide when they start from their initial position within the case, sufficient to enable the drawer to pull the slide out until the latter is positively arrested. This is accomplished by a friction device, preferably a spring or springs 30 attached to the slide with which engages the side of the drawer. -After the slide has thusbeen drawn out to its limit by the drawer any further pull on the drawer disengages it from the spring and it completes the last half of its outward movement properly balanced on the balls 24.

ln combination with the friction device 30, my invention includes any form of antifriction rolling devices which may be substituted for the roller 12 and balls 24.

The slide may be held down at its rear end and guided in the case by flanges 32 secured to the sides of the case and entering grooves 33 in the sides of the slide pieces 7 (Figs. 9 and 10). Also the drawer may be held down upon theslide by lugs 34 working under flanges 85 secured on the tops of said pieces 7. lirsuch construction openings are left at 3G for the lugs 34 to pass in removing andV replacing thedrawerfrom and on the slide. Just in front of these openings are shoulders 37 formed on the slide to be encountered bythe lugs 34 to arrest the forward movement of the drawer on the slide. ln this modification the friction device consists of a spring or springs 38 attached to the slide beneath the flanges 35 and adapted topress on the lugs 34 andcause the slide to be pulled out with the drawer, in the manner fully described in connection with the springs 30.

When the parts are in dotted lines in Fig. 1 the drawer may be detached from the slide and removed bytilting up the front end of the drawer untilthe stop 28 on the drawer is disengaged from the shoulder 29 on the slide, whereupon the stop 28 will pass through the space between the shoulder 29 andthe front lower corner of the rail 20. In the construction shown in Figs. 9 and 10 the drawer is removed from the `slide by tilting up its front end until the lugs 34 are disengaged from the shoulders 37, whereposition shown in upon the lugs willy pass through thev openings 36.

What I claim is 1. In a drawer guide,the combination of the casing, an extension slide mounted therein and arrangedjto be drawn out and to carry a drawer when the latter is outside of the casing, a drawer mounted on the eXtension slide and adapted to move outward with the slide to a point partly without the casing and thence to move outwardly on and relative to the'slide, and adapted to move inwardly on and relative to the slide toV a point partly within the casing and thence to move vinwardly withv the slide toa point with-A in the casing, an anti-friction device mounted `and rolling bodily forward and backward beneath the median part slide and on the forward to substantially balance both the slide yand of the extension drawer while they are moving Ainfunison, an`

Part Of the casingV anti-friction device Lmounted Iand rolling-V bodily forward and backward beneath the median part oflthe drawer and on the for.-

ward part of the extension slide to substantially balance the drawer individually while it is moving on and relative to the extension slide, and means for temporarily connecting the drawer the first part of their outward movement to cause them to move -in unison both balanced on the first mentioned anti-friction device, substantially as and for the purposes described.

2. In a dra-wer guide, the combination of a casing or frame, a slide within the same,

' flanges on the slide, a friction device carried on the slide beneath one of said flanges, an anti-friction rolling device interposed beneath the median portion of the slide, a

Copies of this patent may be obtained for ve cents each, by

drawer on the slide having lugs adapted to slide beneath said flanges and engageable by the said friction device, and an antifriction rolling device interposed between the median portion of the drawer and the slide, whereby the slide is caused to be pulled out with the drawer and both balanced on the first mentioned rolling device and the drawer individually balanced on the second rolling device, substantially as set forth.

In testimony whereof I afiiX my signature in presence of two witnesses.

WILLIAM O. GOTTI/VALS. Witnesses:

H. N. Low, N. CURTIS LAMMOND.

addressing the Commissioner of Patents` Washington, D. C. 

